<template>
  <div class="app-container">
    <el-card class="layout-padding-auto" shadow="hover">
      <el-form v-show="showSearch" ref="queryForm" :inline="true" :model="queryParams" label-width="68px">
        <el-form-item label="文件名" prop="fileName">
          <el-input
              v-model="queryParams.fileName"
              clearable
              placeholder="请输入文件名"
              size="default"
              @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="原名" prop="originalName">
          <el-input
              v-model="queryParams.originalName"
              clearable
              placeholder="请输入原名"
              size="default"
              @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="文件后缀" prop="fileSuffix">
          <el-input
              v-model="queryParams.fileSuffix"
              clearable
              placeholder="请输入文件后缀"
              size="default"
              @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="上传人" prop="createName">
          <el-input
              v-model="queryParams.createName"
              clearable
              placeholder="请输入上传人"
              size="default"
              @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item label="服务商" prop="service">
          <el-input
              v-model="queryParams.service"
              clearable
              placeholder="请输入服务商"
              size="default"
              @keyup.enter.native="handleQuery"
          />
        </el-form-item>
        <el-form-item>
          <el-button size="default" type="primary" @click="handleQuery">
            <el-icon>
              <ele-Search/>
            </el-icon>
            查询
          </el-button>
          <el-button size="default" type="primary" @click="resetQuery">
            <el-icon>
              <ele-Refresh/>
            </el-icon>
            重置
          </el-button>
        </el-form-item>
      </el-form>
      <el-row :gutter="10" class="mb8">
        <el-col :span="1.5">
          <el-button
              plain
              size="default"
              type="primary"
              @click="handleFile"
          >
            <el-icon>
              <ele-Upload/>
            </el-icon>
            上传文件
          </el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
              plain
              size="default"
              type="primary"
              @click="handleImage"
          >
            <el-icon>
              <ele-Upload/>
            </el-icon>
            上传图片
          </el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
              :type="previewListResource ? 'danger' : 'warning'"
              plain
              size="default"
              @click="handlePreviewListResource(!previewListResource)"
          >预览开关 : {{ previewListResource ? "禁用" : "启用" }}
          </el-button>
        </el-col>
        <el-col :span="1.5">
          <el-button
              plain
              size="default"
              type="info"
              @click="handleOssConfig"
          >
            <el-icon>
              <ele-Operation/>
            </el-icon>
            配置管理
          </el-button>
        </el-col>
      </el-row>
      <el-table v-if="showTable" v-loading="loading" :data="ossList"
                :header-cell-class-name="handleHeaderClass"
                @selection-change="handleSelectionChange"
                @header-click="handleHeaderCLick">
        <el-table-column v-if="false" align="center" label="对象存储主键" prop="ossId"/>
        <el-table-column align="center" label="文件名" prop="fileName"/>
        <el-table-column align="center" label="原名" prop="originalName"/>
        <el-table-column align="center" label="文件后缀" prop="fileSuffix"/>
        <el-table-column align="center" label="文件展示" prop="url">
          <template #default="scope">
            <ImagePreview
                v-if="previewListResource && checkFileSuffix(scope.row.fileSuffix)"
                :height=100
                :preview-src-list="[scope.row.url]"
                :src="scope.row.url"
                :width=100
            />
            <span v-if="!checkFileSuffix(scope.row.fileSuffix) || !previewListResource"
                  v-text="scope.row.url"/>
          </template>
        </el-table-column>
        <el-table-column align="center" label="创建时间" prop="createDate" sortable="custom"
                         width="180">
          <template v-slot="scope">
            <span>{{ formatDateTime(scope.row.createTime) }}</span>
          </template>
        </el-table-column>
        <el-table-column align="center" label="上传人" prop="createBy"/>
        <el-table-column align="center" label="服务商" prop="service"
                         sortable="custom"/>
        <el-table-column align="center" class-name="small-padding fixed-width" label="操作">
          <template v-slot="scope">
            <el-button
                icon="el-icon-edit"
                size="default"
                type="text"
                @click="handleDownload(scope.row)"
            >下载
            </el-button>
            <el-button
                icon="el-icon-delete"
                size="default"
                type="text"
                @click="handleDelete(scope.row)"
            >删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>

      <el-pagination v-model:current-page="queryParams.pageNum"
                     v-model:page-size="queryParams.pageSize"
                     :page-sizes="[10, 20, 30]"
                     :pager-count="5"
                     :total="total" background class="mt15"
                     layout="total, sizes, prev, pager, next, jumper"
                     @size-change="onHandleSizeChange" @current-change="onHandleCurrentChange">
      </el-pagination>
    </el-card>

    <!-- 添加或修改OSS对象存储对话框 -->
    <el-dialog v-model="open" :title="title" append-to-body width="500px">
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="文件名">
          <fileUpload v-if="type === 0" v-model="form.file"/>
          <imageUpload v-if="type === 1" v-model="form.file"/>
        </el-form-item>
      </el-form>
      <template v-slot:footer>
        <div class="dialog-footer">
          <el-button :loading="buttonLoading" size="default" type="primary" @click="submitForm">确 定</el-button>
          <el-button size="default" @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script>
import {delOss, listOss} from '/src/api/sys/js/oss';
import {formatDateTime} from "/@/utils/date";
import {ElLoading, ElMessage, ElMessageBox} from "element-plus";
import axios from "axios";
import {Session} from "/@/utils/storage";
import {saveAs} from 'file-saver'
import {blobValidate} from "/@/utils/ruoyi";

export default {
  name: "Oss",
  data() {
    return {
      showTable: true,
      // 按钮loading
      buttonLoading: false,
      // 遮罩层
      loading: true,
      // 导出遮罩层
      exportLoading: false,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // OSS对象存储表格数据
      ossList: [],
      // 弹出层标题
      title: "",
      // 弹出层标题
      type: 0,
      // 是否显示弹出层
      open: false,
      // 预览列表图片
      previewListResource: true,
      // 创建时间时间范围
      daterangeCreateTime: [],
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        sortName: 'id',
        params: {
          fileName: undefined,
          originalName: undefined,
          fileSuffix: undefined,
          url: undefined,
          createDate: undefined,
          createName: undefined,
          service: undefined
        }
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        file: [
          {required: true, message: "文件不能为空", trigger: "blur"}
        ]
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    formatDateTime,
    /** 查询OSS对象存储列表 */
    getList() {
      this.loading = true;
      this.getConfigKey("sys.oss.previewListResource").then(response => {
        this.previewListResource = response.data.configValue === 'true';
      });
      listOss(this.addDateRange(this.queryParams, this.daterangeCreateTime)).then(response => {
        this.ossList = response.data.records;
        this.total = response.data.total;
        this.loading = false;
        this.showTable = true;
      });
    },
    // 分页改变
    onHandleSizeChange(val) {
      this.queryParams.pageSize = val;
      this.getList();
    },
    // 分页改变
    onHandleCurrentChange(val) {
      this.queryParams.pageNum = val;
      this.getList();
    },
    checkFileSuffix(fileSuffix) {
      let arr = ["png", "jpg", "jpeg"];
      return arr.some(type => {
        return fileSuffix.indexOf(type) > -1;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        file: undefined,
      };
      this.resetForm("form");
    },
    // 表单重置
    resetForm(refName) {
      if (this.$refs[refName]) {
        this.$refs[refName].resetFields();
      }
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.showTable = false;
      this.daterangeCreateTime = [];
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.ossId)
      this.single = selection.length !== 1
      this.multiple = !selection.length
    },
    // 设置列的排序为我们自定义的排序
    handleHeaderClass({column}) {
      column.order = column.multiOrder
    },
    // 点击表头进行排序
    handleHeaderCLick(column) {
      if (column.sortable !== 'custom') {
        return
      }
      switch (column.multiOrder) {
        case 'descending':
          column.multiOrder = 'ascending';
          break;
        case 'ascending':
          column.multiOrder = '';
          break;
        default:
          column.multiOrder = 'descending';
          break;
      }
      this.handleOrderChange(column.property, column.multiOrder)
    },
    handleOrderChange(prop, order) {
      let orderByArr = this.queryParams.orderByColumn ? this.queryParams.orderByColumn.split(",") : [];
      let isAscArr = this.queryParams.isAsc ? this.queryParams.isAsc.split(",") : [];
      let propIndex = orderByArr.indexOf(prop)
      if (propIndex !== -1) {
        if (order) {
          //排序里已存在 只修改排序
          isAscArr[propIndex] = order;
        } else {
          //如果order为null 则删除排序字段和属性
          isAscArr.splice(propIndex, 1);//删除排序
          orderByArr.splice(propIndex, 1);//删除属性
        }
      } else {
        //排序里不存在则新增排序
        orderByArr.push(prop);
        isAscArr.push(order);
      }
      //合并排序
      this.queryParams.orderByColumn = orderByArr.join(",");
      this.queryParams.isAsc = isAscArr.join(",");
      this.getList();
    },
    /** 任务日志列表查询 */
    handleOssConfig() {
      this.$router.push({path: '/system/oss-config'})
    },
    /** 文件按钮操作 */
    handleFile() {
      this.reset();
      this.open = true;
      this.title = "上传文件";
      this.type = 0;
    },
    /** 图片按钮操作 */
    handleImage() {
      this.reset();
      this.open = true;
      this.title = "上传图片";
      this.type = 1;
    },
    /** 提交按钮 */
    submitForm() {
      this.open = false;
      this.getList();
    },
    /** 下载按钮操作 */
    handleDownload(row) {
      var url = import.meta.env.VITE_API_URL + '/oss/download/' + row.id
      let downloadLoadingInstance = ElLoading.service({
        text: "正在下载数据，请稍候",
        spinner: "el-icon-loading",
        background: "rgba(0, 0, 0, 0.7)",
      })
      axios({
        method: 'get',
        url: url,
        responseType: 'blob',
        headers: {'sa-token': Session.get('token')}
      }).then((res) => {
        const isBlob = blobValidate(res.data);
        if (isBlob) {
          const blob = new Blob([res.data], {type: 'application/octet-stream'})
          this.saveAs(blob, decodeURIComponent(res.headers['download-filename']))
        } else {
          ElMessage.success(res.data);
        }
        downloadLoadingInstance.close();
      }).catch(() => {
        ElMessage.error('下载文件出现错误，请联系管理员！')
        downloadLoadingInstance.close();
      })
    },
    saveAs(text, name, opts) {
      saveAs(text, name, opts);
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ossIds = row.ossId || this.ids;
      ElMessageBox.confirm('是否确认删除OSS对象存储编号为"' + ossIds + '"的数据项?').then(() => {
        this.loading = true;
        return delOss(row);
      }).then(() => {
        this.loading = false;
        this.getList();
        ElMessage.success("删除成功");
      }).finally(() => {
        this.loading = false;
      });
    },
    // 预览列表图片状态修改
    handlePreviewListResource(previewListResource) {
      let text = previewListResource ? "启用" : "停用";
      ElMessageBox.confirm('确认要"' + text + '""预览列表图片"配置吗?').then(() => {
        return this.updateConfigByKey("sys.oss.previewListResource", previewListResource);
      }).then(() => {
        this.getList()
        ElMessage.success(text + "成功");
      }).catch(() => {
      })
    }
  }
};
</script>
